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b2a534e Jul 12, 2016
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/***************************************************
Adafruit MQTT Library ESP8266 Adafruit IO SSL/TLS example
Must use the latest version of ESP8266 Arduino from:
https://github.com/esp8266/Arduino
Works great with Adafruit's Huzzah ESP board & Feather
----> https://www.adafruit.com/product/2471
----> https://www.adafruit.com/products/2821
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
Written by Tony DiCola for Adafruit Industries.
Time additions by Todd Treece for Adafruit Industries.
MIT license, all text above must be included in any redistribution
****************************************************/
#include <ESP8266WiFi.h>
#include "Adafruit_MQTT.h"
#include "Adafruit_MQTT_Client.h"
/************************* WiFi Access Point *********************************/
#define WLAN_SSID "network"
#define WLAN_PASS "password"
/************************* Adafruit.io Setup *********************************/
#define AIO_SERVER "io.adafruit.com"
#define AIO_SERVERPORT 8883
#define AIO_USERNAME "user"
#define AIO_KEY "key"
WiFiClientSecure client;
Adafruit_MQTT_Client mqtt(&client, AIO_SERVER, AIO_SERVERPORT, AIO_USERNAME, AIO_USERNAME, AIO_KEY);
Adafruit_MQTT_Subscribe timefeed = Adafruit_MQTT_Subscribe(&mqtt, "time/seconds");
// set timezone offset from UTC
int timeZone = -4; // UTC - 4 eastern daylight time (nyc)
int interval = 4; // trigger every X hours
int hour = 0; // current hour
void timecallback(uint32_t current) {
// stash previous hour
int previous = hour;
// adjust to local time zone
current += (timeZone * 60 * 60);
// calculate current hour
hour = (current / 60 / 60) % 24;
// only trigger on interval
if((hour != previous) && (hour % interval) == 0) {
Serial.println("Run your code here");
}
}
void setup() {
Serial.begin(115200);
delay(10);
Serial.print(F("Adafruit IO Time Demo"));
WiFi.begin(WLAN_SSID, WLAN_PASS);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(F("."));
}
Serial.println(F(" WiFi connected."));
timefeed.setCallback(timecallback);
mqtt.subscribe(&timefeed);
}
void loop() {
// Ensure the connection to the MQTT server is alive (this will make the first
// connection and automatically reconnect when disconnected). See the MQTT_connect
// function definition further below.
MQTT_connect();
// wait 10 seconds for subscription messages
// since we have no other tasks in this example.
mqtt.processPackets(10000);
// keep the connection alive
mqtt.ping();
}
// Function to connect and reconnect as necessary to the MQTT server.
// Should be called in the loop function and it will take care if connecting.
void MQTT_connect() {
int8_t ret;
// Stop if already connected.
if (mqtt.connected()) {
return;
}
Serial.print("Connecting to MQTT... ");
uint8_t retries = 3;
while ((ret = mqtt.connect()) != 0) { // connect will return 0 for connected
Serial.println(mqtt.connectErrorString(ret));
Serial.println("Retrying MQTT connection in 5 seconds...");
mqtt.disconnect();
delay(5000); // wait 5 seconds
retries--;
if (retries == 0) {
// basically die and wait for WDT to reset me
while (1);
}
}
Serial.println("MQTT Connected!");
}